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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7.     int ilosc;
  8.     cin >> ilosc;
  9.     if(ilosc>10 || ilosc<1)
  10.         return 0;
  11.     int a,b;
  12.     for(int c=0; c<ilosc; c++)
  13.     {
  14.     cin >> a >> b;
  15.     if((a<1 || a>1000000000) || (b<1 || b>1000000000))
  16.     {
  17.         return 0;
  18.     }
  19.     else
  20.     {
  21.         while(a>10)
  22.             a=a%10;
  23.         while(b>10)
  24.             b=b%10;
  25.         switch(a)
  26.         {
  27.         case 0:
  28.             cout << 0;
  29.             break;
  30.         case 1:
  31.             cout << 1;
  32.             break;
  33.         case 2:
  34.             if(b%2==0)
  35.             {
  36.                 while(b-4>=1)
  37.                     b-=4;
  38.                 if(b==4)
  39.                     cout << 6;
  40.                 if(b==2)
  41.                     cout << 4;
  42.             }
  43.             else
  44.             {
  45.                 while(b-4>=1)
  46.                     b-=4;
  47.                 if(b==1)
  48.                     cout << 2;
  49.                 if(b==3)
  50.                     cout << 8;
  51.             }
  52.             break;
  53.         case 3:
  54.             if(b%2==0)
  55.             {
  56.                 while(b-4>=1)
  57.                     b-=4;
  58.                 if(b==4)
  59.                     cout << 1;
  60.                 if(b==2)
  61.                     cout << 9;
  62.             }
  63.             else
  64.             {
  65.                 while(b-4>=1)
  66.                     b-=4;
  67.                 if(b==1)
  68.                     cout << 3;
  69.                 if(b==3)
  70.                     cout << 7;
  71.             }
  72.             break;
  73.         case 4:
  74.             if(b%2==0)
  75.                 cout << 6;
  76.             else
  77.                 cout << 4;
  78.             break;
  79.         case 5:
  80.             cout << 5;
  81.             break;
  82.         case 6:
  83.             cout << 6;
  84.             break;
  85.         case 7:
  86.             if(b%2==0)
  87.             {
  88.                 while(b-4>=1)
  89.                     b-=4;
  90.                 if(b==4)
  91.                     cout << 1;
  92.                 if(b==2)
  93.                     cout << 9;
  94.             }
  95.             else
  96.             {
  97.                 while(b-4>=1)
  98.                     b-=4;
  99.                 if(b==1)
  100.                     cout << 7;
  101.                 if(b==3)
  102.                     cout << 3;
  103.             }
  104.             break;
  105.         case 8:
  106.             if(b%2==0)
  107.             {
  108.                 while(b-4>=1)
  109.                     b-=4;
  110.                 if(b==4)
  111.                     cout << 6;
  112.                 if(b==2)
  113.                     cout << 4;
  114.             }
  115.             else
  116.             {
  117.                 while(b-4>=1)
  118.                     b-=4;
  119.                 if(b==1)
  120.                     cout << 8;
  121.                 if(b==3)
  122.                     cout << 2;
  123.             }
  124.             break;
  125.         case 9:
  126.             if(b%2==0)
  127.                 cout << 1;
  128.             else
  129.                 cout << 9;
  130.             break;
  131.         case 10:
  132.             cout << 0;
  133.             break;
  134.  
  135.         }
  136.     }
  137.     cout << endl;
  138.     }
  139.     return 0;
  140. }
  141.  
Success #stdin #stdout 0s 16064KB
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https://ideone.com/5KFVI0
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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